Means for sharpening knives in cloth-cutting machines.



A. A. SIMON.

MEANS FOR SHARPENING KNIVES IN CLOTH CUTTING MACHINES. APPLICATION FILED T11R24, 1909.

927,689, Patented July 13, 1909.

2 SHEETS-SHEET 1.

giifbbmc an e o 6] It'll C 1W0 c A. A. SIMON. MEANS FOR SHARPENING KNIVES IN GLOT H CUTTING MACHINES. APPLICATION FILED FBB.24,1909.

Patented July 13, 1909.

2 SHEETS-SHEET 2.

ABRAHAM A. SIMON, OF NEW YORK, N. Y.

MEANS FOR SHARPENING KNIVES IN CLOTH-CUTTING MACHINES.

Specification of Letters Patent.

Patented July 13, 1909.

Application filed February 24, 1909. Serial No. 479,764.

To all whom it may concern:

Be it known that I, ABRAHAM A. SIMON, a subject of the Czar of Russia, and resident of New York city, borough of Manhattan, in the county of New York and State of New York, have invented certain new and useful Improvements in Means for Sharpening Knives in Cloth-Cutting Machines, of which the following is a specification;

The object of my invention is to provide simple and effective means for sharpening reciprocative knives in cloth cutting machines, while permitting the sharpening ,means to be removed from the knife and maintained out of the way of the cloth being cut and to be brought into co-action with the knife as required.

The invention comprises the novel details of improvement and combinations of parts that will be more fully hereinafter set forth and then pointed out in the claims.

Reference is to be had to the accompanying drawings formingpart hereof, wherein,

Figure l is a plan view of a cloth cutting machine embodying my improvements Fig. 2 is a side view thereof; Fig. 3 is a front view thereof, and Fig. 4 is a detail section on the line 4, 4, in Fig. 3.

Similar numerals of reference indicate corresponding parts in the several views.

The numeral 1 indicates a suitable base to which is attached an upright or standard 2 in any wellknown manner, and at 3 is a reciprocative knife shown connected with a driving rod 4 suitably guided and which may be operated by a motor connected with upright 2 in any wellknown manner. At 5 are suitable frames movably carried by upright 2, as by being pivotally supported at their upper ends in bearings 6 attached to upright 2 on opposite sides of knife 3, whereby said frames may swing toward and away from the knife, as indicated in full and dotted lines in Fig. 3. Within frames 5 are journalcd rotary sharpening or grin ding devices 7, which may be in the form of emery wheels of suitable shape which are journaled to rotate on shafts 8 carried by frames 5 in' such position that when said frames are lowered said grinding wheels will rotate in contact with opposite sides of the knife 3 at its forward cutting edge, as the knife reciprocates, or when the knife'is stationary. I have shown springs. 9 connected with frames 5 and with bearings 6 in such manner as normally to tend to hold frames 5 in an elevated position away from knife 3 and the cloth to be out (see dotted lines in Fig. 3). Means are provided to at will swing frames 5 downwardly to cause wheels 7 to act upon knife 3. For this purpose I have shown a suitable lever 10 pivotally supported upon upright 2 and connected with frames 5, as by belts or cords 11, which are shown connected with the forked ends of lever 10, pass over pulleys 12 journaled on upright 2, and engage pulleys 13 secured to the horizontal upper parts 5 of frames 5,

whereby when lever 10 is lifted at its outer end 10 the belts or cords 11 will be drawn down and by action upon pulleys 1 3 will cause frames 5 to swing downwardly (as in full lines in Fig. 3) topress the wheels 7 against knife 3, and. when lever 10 is next released springs 9 will act to lift frames 5 and wheels 7 away from the knife.

To cause sharpening wheels 7 to rotate approximately only when in position for acting upon knife 3 said wheels are shown provided with grooves 01'' pulley-like arts 7, receiving bolts 15 that pass over t ie guide pulleys l6 carried by frames 5 and over driving pulleys .17 the ordinary slack in belts 15 permitting frames 5 to swing up and down. Pulleys 17 are shown carried by shaft 18 supported by an arm 19 pivotally carried by upright 2, as at 20, a spring 19 acting upon arm 19 and upright 2 tending normally to raise said arm sufficiently to hold gears 21, that are secured to shaft 18, out of mesh with a gear 22. Gear 22 is shown iournaled upon an arm 23. (as upon a stud 24 thereon) extending from upright 2, and may be rotated in any suitable manner; as from the motor that operates knife 3.

Normally spring 19 will keep gears 21 out of mesh with gear 22 and springs 9 will keep frames 5 elevated. When it is desired to sharpen knife 3, lever 10 is operated to swing down frames 5 and bring the sharpening wheels 7 in contact with the knife, and arm 19 is then also operated, as by a link 19 connecting arm 19 with lever 10, to place gears 21. in'mesh with gear 22 whereu )on belts 15 will be operated to rotate wheels 7 hen lever 10 and arm 19 are released, frames 5 will rise and gears 21 will be raised and held out of mesh with gear 22.

T o sharpen the lower end of knife 3 siniul-- taneously with sharpening the forward or vertical cutting edge of the knife, I provide sharpening means, such as blocks of emery 25, which are supported. in suitable bearings iio are norinallypressed toward the knife, as

by springs 27 shown carried lay-boxes 26 and pressing against the outer ends of blocks 25 suitable pins or studs 28 carried by boxes 26 limiting the inward movement of blocks 25.

The arrangement is such that when frames 5 are swung downwardly the lower edge of knife 3 will reciprocate between the sharpening blocks 25, which by being s ring pressed in the direction of the blade wilf give back as required and make necessary contact with the blade edge. It will'thus be seen that the vertical or forward cutting edge of the blade as well as its lower cutting edge may simul taneously be sharpened, the Vertical. edge by the rotation of wheels 7, and the reciprocation of knife 3 in contact with such wheels, and the lower edge of the blade by the reciprocationof the knife in contact with blocks 25. The arrangements shown for operating belts 15n1ay be changed according to the construction of, thecutting machine to which my improvements may be applied, and lever 10 ,need not be forked, as shown, as both belts or cords 11 may be connected to one end of said lever atone side of support 2. My invention is not limited to the details of construction and arrangementsof parts shown anddescribed, as the same may be yaried within the scope of the appended claims without departing from the spirit thereof.

. Having now descn'bedmy invention what I claim is 1- 1.- In a cutting machine, the combination of a reciprocative knife, shar ening means located on opposite sides of tee knife, and means for swinging said sharpening means downwardly and upwardly toward and away from opposite sides of the knife in a plane.

transverse to the cutting edge of the knife.

2. In a sharpening machine, the combina tion of a reciprocative knife, frames movably supported on opposite sides of the knife, to swing up and down in a plane transverse to the cutting edge of the knife, sharpening means carried by said frames, and means for moving said frames to carry the sharpening means into and out of engagement with the knife. l

3. in a cutting machine, the combination or a ported at opposite sides of the knife, sharpening means carried by the frames to co-act reciprocative knife, framesmo'vably sup-' wheels, means for en porting said wheels on opposite sides of the ffnife, means for moving said wheels into'and out of engagement with the knife, andknife sharpening means below and associated with said wheels for sharpen ing the lower edge of the reel nocativc knife.

5. In a cutting machine, the combination of a'reciprocative knife, frames movably sup ported on opposite sides thereof, to swing up and down in a plane transverse to the cutting frames out of the path of movement-pf the knife during work, rotary sharpening wheels carried by said framesto engage the knife, and means to operate said wheels.

6. In a cutting machine, the combination of a reciprocative knife, frames movably supported on o) osite sides thereof, means to normally holc the frames out of the path of movement of the knife during work, rotary sharpening wheels carried by said frames to engage the knife, means to operate said wheels, and sharpening blocks carried by said frames below said wheels to engage the lower end of, the knife 7. The combination of a support, a reciprocative knife, frames movably carried by said support, to swing up and down in a lane transverse to the cutting edge of the :nife,

springs to normally hold said frames out of, the path of the knife during work, means" to at will swing said frames down into said path, rotary sharpening wheels carried by said frames, and means to rotate said wheels when in knife-sharpening position. v

, 8. The combination of a support, a reciprocative knife, fram'esmovably carried by said support, springs-to normally hold said frames out of the path of the knife during work, means to at will swing said frames down I into said path, rotary sharpen ng wheels carried by said frames, and sharpening means carried by said frames below said wheels to engage the lower edge of the knife.

' 9'. The combination of a support, a reciprocative knife, frames movably carried by said support, springs to normally hold said edge of the knife, means tonormally holdthe frames. out of the path of the knife during work, means to at will swing said frames down into said path, rotary sharpening wheelscarried by said frames, bearings car'- ried by said frames, sharpeningblocks supported in said bearings, and means to maintain said blocks in o erative osition with respect to the lower edge of the nife. 10. In a sharpening machine, the combination of a reciprocative knife, a support, frames on opposite sides of the support, means to at will raise and lower said frames with respect to the knife, sharpenin wheels journaled in said frames, separate opposite sides of the support to separately rotate said wheels, pulleys for said belts, and means to at will simultaneously rotate said pulleys.

11. In a sharpening machine, the combination of a rec1procat1vc 1111110, a support, swinging frames, means to at will swing said frames up and down with respect to the knife, sharpening Wheels journaled in said frames, belts to rotate said wheels, pulleys for said belts, pinions connected with said pulleys, a gear to operate said pinions, and means to at will cause said gear to operate said pinions.

12. 111 a sharpening machine, the combination of a reciprocative knife, a support, frames, means to at W11 raise and lower said frames with respect to L1 knife, sharpening wheels journaled in said frames, belts to rotate said wheels, pulleys for said belts, pinions connected with said pulleys, an arm carrying said pulleys and pinions, a gear to coact with said pinions, and a spring acting to normally keep said pinions and gear out of mesh.

13. A cutting machine comprising a reciprocatiye knife, frames movahly supported 011 opposite sides of the knife, sharpening wheels journaled in said frames, a lever, a support for said frames and lever, and connections between the lever and frames for at will swinging the latter up and down.

14. 111 a cutting machine, the combination of a reciproeative knife, a support, frames pivotally carried by said support adjacent their upper ends, springs to normally hold said frames out of the path of the knife during work, a. lever, means coi'ineeting said lever with said frames for at will lowering said frames, and sharpening means carried by said frames.

Signed at New York city, in the county of New York, and State of New York, this 15th day of February, A. D. 1909.

ABRAHAM A. SIMON.

Witnesses:

RALPH H. RAPHAEL, T. F. BOURNE. 

